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the SMD series is designed to monitor positive
System Protection: Reduces the electrical load spike on the building’s power supply by sequencing high-amperage heating stages
ensuring secure data logging and rapid fault finding without the latency of wireless alternatives
ensuring stable performance under significant inductive loads
this assembly features a premium ceramic insulator and a high-temperature silicon nitride ignitor element designed to withstand rapid thermal cycling without premature failure
Reznor 221158 Limit Switch Els PW 17895 the SMD series is designedThe Reznor 221158 is a professional grade 145F manual reset limit switch designed for critical thermal protection in industrial and commercial HVAC systems. This genuine Reznor OEM component acts as a primary safety control, monitoring the heat exchanger and air plenum to prevent hazardous overheating conditions. Engineered with a fixed 145 degree Fahrenheit trip point, the switch interrupts the control circuit if internal temperatures exceed the safe
